package com.sky.service.impl;

import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.EmployeeErrorException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;

import java.time.LocalDateTime;
import java.util.List;

import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;


@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();
        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);
        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }
        //密码比对，需要进行md5加密，然后再进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());
        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }
        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }
        //3、返回实体对象
        return employee;
    }

    @Override
    public PageResult queryEmployeePage(String name, Integer page, Integer pageSize) {
        PageHelper.startPage(page, pageSize);
        List<Employee> employeeList = employeeMapper.selectEmployeeByName(name);
        PageInfo<Employee> employeePageInfo = new PageInfo<>(employeeList);

        PageResult pageResult = new PageResult();
        pageResult.setTotal(employeePageInfo.getTotal());
        pageResult.setRecords(employeeList);
        return pageResult;
    }

    @Override
    public void updateEmployeeStatus(Integer id, Integer status) {
        employeeMapper.updateEmployeeStatus(id, status);
    }

    @Override
    public Employee queryEmployeeById(Long id) {
        return employeeMapper.queryEmployeeById(id);
    }

    @Override
    public void updateEmployee(EmployeeDTO employeeDTO) {
        if (employeeDTO == null) {
            throw new EmployeeErrorException(MessageConstant.INFO_IS_NULL);
        }
        if (StringUtils.isBlank(employeeDTO.getUsername())) {
            throw new EmployeeErrorException(MessageConstant.USER_NAME_IS_NULL);
        }
        if (StringUtils.isBlank(employeeDTO.getName())) {
            throw new EmployeeErrorException(MessageConstant.NAME_IS_NULL);
        }
        if (StringUtils.isBlank(employeeDTO.getPhone())) {
            throw new EmployeeErrorException(MessageConstant.PHONE_IS_NULL);
        }
        if (StringUtils.isBlank(employeeDTO.getIdNumber())) {
            throw new EmployeeErrorException(MessageConstant.IDENTITY_CARD_IS_NULL);
        }
        Integer count = employeeMapper.selectByUserNameIsNotIdCount(employeeDTO.getId(), employeeDTO.getUsername());
        if (count > 0) {
            throw new EmployeeErrorException(MessageConstant.EMPLOYEE_IS_REPETITION);
        }
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setIdNumber(employeeDTO.getIdNumber());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.updateEmployee(employee);
    }

    @Override
    public void saveEmployee(EmployeeDTO employeeDTO) {
        if (StringUtils.isBlank(employeeDTO.getUsername())) {
            throw new EmployeeErrorException(MessageConstant.USER_NAME_IS_NULL);
        }
        if (StringUtils.isBlank(employeeDTO.getName())) {
            throw new EmployeeErrorException(MessageConstant.NAME_IS_NULL);
        }
        if (StringUtils.isBlank(employeeDTO.getPhone())) {
            throw new EmployeeErrorException(MessageConstant.PHONE_IS_NULL);
        }
        if (StringUtils.isBlank(employeeDTO.getIdNumber())) {
            throw new EmployeeErrorException(MessageConstant.IDENTITY_CARD_IS_NULL);
        }
        if (StringUtils.isBlank(employeeDTO.getSex())) {
            throw new EmployeeErrorException(MessageConstant.SEX_IS_NULL);
        }
        Integer count = employeeMapper.selectByUserNameIsNotIdCount(null, employeeDTO.getUsername());
        if (count > 0) {
            throw new EmployeeErrorException(MessageConstant.EMPLOYEE_IS_REPETITION);
        }
        Employee employee = new Employee();
        BeanUtils.copyProperties(employeeDTO, employee);
        employee.setPassword(PasswordConstant.DEFAULT_PASSWORD);
        employee.setIdNumber(employeeDTO.getIdNumber());
        employee.setStatus(StatusConstant.ENABLE);
        /* AOP自动注入
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());*/
        employeeMapper.saveEmployee(employee);
    }
}
